A method for determining the atmospheric pressure on the basis of the intake pressure measured downstream of an air filter in an intake line of an internal combustion engine, and of the air mass flow rate measured downstream of the air filter, and optionally of the intake air temperature. The brush cover comprises at least one lever brush which is mounted rotatably about an axis at the brush cover by means of a bolt. The cartridge comprises a storage unit which is provided inside the toner reservoir and capable of communicating with the apparatus body. The system and method may also include a transmitter at the session border controller configured to transmit the message with the second source information to a service provider proxy for granting network access. Synthesis gas may be produced from the formation in a batch manner or in a substantially continuous manner. Methods of making and using the disclosed devices are also provided herein.